We were returning from a camping trip running the generator to keep the Rv cool for unloading. When home the generator had stopped. I assumed the propane tank was empty and without looking at the regulator I just flipped it to the other tank which I had filled while on this trip. Genny fired up and stopped, regulator showing red (empty). I swapped the empty tank and same thing. Both tanks have propane, both showing red. No gas at the range top either.

So did my regulator quit working? If it is the regulator, where should I get a replacement? I'm not mechanical, but it looks like a fairly easy swap. Comments please?

If you are sure both tanks have gas, close them & wait a bit then open 1 slowly, too fast triggers the check valve in the bottle, then turn the burners on the cooktop to insure there is flow, then slowly open bottle 2.
As far as a new change over regulator they can be had on line or your local propane dealer or local rv parts store, Marshall seems to be the regulators of choice. If you change it you may as well change the little 30# regulator on the curdside also, they are usually short lived as well.

Thanks Danny, I tried the slow valve opening. Both tanks continue to show empty and could not light burners or oven, however I did try the genny and it started up. This while the regulator showed empty. I ran the genny for about 20 minutes, then switched tanks and it stopped. switched back and no go, could not start. Tried the range top repeatedly while the genny was running but wouldn't lite. This still sound like a bad regulator? This is my 1st Rv and my knowledge is limited.

We were returning from a camping trip running the generator to keep the Rv cool for unloading. When home the generator had stopped. I assumed the propane tank was empty and without looking at the regulator I just flipped it to the other tank which I had filled while on this trip. Genny fired up and stopped, regulator showing red (empty). I swapped the empty tank and same thing. Both tanks have propane, both showing red. No gas at the range top either.

So did my regulator quit working? If it is the regulator, where should I get a replacement? I'm not mechanical, but it looks like a fairly easy swap. Comments please?

Starting during the 2cd year of Redwood ownership, over a period of the next 2 years, I had to replace both pigtails, the red regulator on the right side and the main changeover regulator on the left side. I replaced the 15 inch pigtails with 20 inch pigtails (I only have 30 lb tanks) because the 15 inch were too short and causing too much of a bind on the pigtail. The Cavagna regulators have held up well with no problems at least over the last 2 to 3 years